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preface to fifteenth edition

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8.132 SECTION 8<br />

TABLE 8.27<br />

Potentials of the Elements and Their Compounds at 25C (Continued)<br />

Half-reaction<br />

Standard<br />

or formal<br />

potential<br />

Solution<br />

composition<br />

O 2 4H 4e 2H 2 O 1.229<br />

O 2 2H 2e H 2 O 0.695<br />

O 2 H 2 O 2e HO<br />

2 OH <br />

0.076<br />

H 2 O 2 2H 2e 2H 2 O 1.763<br />

HO<br />

2 H 2 O 2e 3OH <br />

0.867 1 NaOH<br />

O 2 2H 2 O 4e 4OH 0.401<br />

Palladium<br />

PdO 3 2H 2e PdO 2 H 2 O 2.030<br />

PdCl 6 2e PdCl4 2Cl <br />

1.470<br />

PdBr 6 2e PdBr4 2Br <br />

0.99<br />

PdI 6 2e PdI4 2I <br />

0.48<br />

Pd 2 2e Pd 0.915<br />

PdCl<br />

4 2e Pd 4Cl <br />

0.62 1 HCl<br />

PdBr<br />

4 2e Pd 4Br <br />

0.49<br />

2<br />

Pd(NH 3 ) 4 2e Pd 4NH 3<br />

0.0 1 NH 3<br />

Pd(CN)<br />

4 2e Pd 4CN <br />

1.35 1 KCN<br />

Phosphorus<br />

H 3 PO 4 2H 2e H 3 PO 3 H 2 O 0.276<br />

2H 3 PO 4 2H 2e H 4 P 2 O 6 2H 2 O 0.933<br />

H 4 P 2 O 6 2H 2e 2H 3 PO 3 0.380<br />

H 3 PO 3 2H 2e HPH 2 O 2 H 2 O 0.499<br />

HPH 2 O 2 H e P 2H 2 O 0.365<br />

H 3 PO 3 3H 3e P 3H 2 O 0.502<br />

2P(white) 4H 4e P 2 H 4 0.100<br />

P 2 H 4 2H 2e 2PH 3 0.006<br />

P(white) 3H 3e PH 3 0.063<br />

Platinum<br />

PtO 3 2H 2e PtO 2 H 2 O 2.0<br />

PtO 2 2H 2e PtO H 2 O 1.045<br />

PtCl 6 2e PtCl4 2Cl <br />

0.726<br />

PtBr 6 2e PtBr4 2Br <br />

0.613 1 KBr<br />

PtI 6 2e PtI4 2I <br />

0.321 1 KI<br />

Pt 2 2e Pt 1.188<br />

PtCl<br />

4 2e Pt 4Cl <br />

0.758<br />

PtBr<br />

4 2e Pt 4Br <br />

0.698<br />

Plu<strong>to</strong>nium<br />

2<br />

PuO e <br />

2 PuO2 1.02<br />

2<br />

PuO2 4H 2e Pu 4 2H 2 O<br />

1.04<br />

Pu 4 e Pu 3 1.01<br />

0.80 1 H 3 PO 4<br />

0.50 1 HF<br />

Pu 4 4e Pu 1.25<br />

Pu 3 3e Pu 2.00<br />

Polonium<br />

PoO 2 4H 2e Po 2 2H 2 O 1.1<br />

Po 4 4e Po 0.73<br />

Po 2 2e Po 0.37<br />

Po 2H 2e H 2 Po ca. 1.0

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